package com.guet.springcloud.controller;

import com.guet.springcloud.entities.CommonResult;
import com.guet.springcloud.entities.Payment;
import com.guet.springcloud.lb.MyLB;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author MicahYin
 * @date 2020/12/30 11:34
 */
@RestController
@Slf4j
public class OrderController {
//    public static final String PAYMENT_URL = "http://localhost:8001";
    //此处填写微服务的名称
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;
    @Resource
    private MyLB myLB;
    @Resource
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }
    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity=restTemplate.getForEntity(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else{
            return new CommonResult<>(444,"操作失败");
        }
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLb(){
        List<ServiceInstance> instances=discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instances==null||instances.size()<=0){
            return null;
        }
        ServiceInstance serviceInstance=myLB.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }
}